Improvement in draft apparatus for stoves



J. B. ANDREWS. Draught Apparatus for Stoves, 8m.

No. 199,396. Patented Jan. 22,1878.

UNITED STATES PATENT OEEIoE.

JAMES B. ANDREWS, OF JERSEY CITY, NEW JERSEY.

IMPROVEMENT IN DRAFT APPARATUS FOR STOVES, 80C.

Specification forming part of Letters Patent No. 199,396, dated January22, 1878 application filed December 27, 1877.

To all whom it may concern:

Be it known that I, JAMEs B. ANDREWS, of Jersey City, in the county ofHudson and State of New Jersey, have invented certain new and usefulImprovements in Draft Apparatus for Stoves, &c.; and I do hereby declarethat the following is a fulland exact description thereof, referencebeing had to the accompanying drawings, making a part of thisspecification.

My invention relates to certain novel improvements in draft apparatusfor heating stoves, furnaces, and the like.

It has for its object to produce an artificial current of air to inducedraft through the grate and fire-pot, especially at the time when thefire is being started.

Vith this object in view, my invention consists in the arrangement andcombination with the stove-pipe of a draft and blower, as will hereinafter more fully appear.

To enable others to make and use my invention, I will proceed todescribe the same more in detail, referring by letters to theaccompanying drawing, in which- Figure 1 is a side elevation of astove-pipe elbow provided with my improvement, the side of the elbowbeing broken away, exposing the mechanism inside and Fig. 2 is across-section at the line a: w of Fig. 1.

Similar letters indicate like parts in both views.

A represents an ordinary sheet-metal stovepipe elbow, within thehorizontal portion of which is arranged centrally a suction and blowerfan, composed of a shaft, B, one end of which has its bearing in across-bar, C, arranged across the pipe, as seen more clearly in dottedlines at Fig. 2. This shaftB has its opposite end projecting through thevertical end of the elbow, in which it has its bearing. The projectingend of the shaft B is provided with a pinion, D, meshing with one of atrain of gears rotated by a crank-gear, E. The shaft B is provided withradial arms a a, to which are secured any desirable number of vanes, F,the rear ends curved to conform to the interior shape of the verticalend of the elbow, and thence running straight to within a short distanceof the front end, where they are bent, as shown more particularly atFig. 2, to produce a suction or draft, so that the front ends draw, andthe portion back of the same blow upward, producing a current in thedirection of the arrows.

By turning the crank E the suction-blower is rapidly rotated, and anupward strong current is induced, which quickly kindles the fire in thefire-pot of a stove or furnace.

I have shown my invention as applied to the elbow of the stove-pipe; butI do not wish to limit myself to the exact location shown, as it may beapplied to some other part of the stove with equal advantage. Nor do Iwish to confine myself to the exact means shown for rotating thesuction-blower, as other equivalent means may be employed.

What I claim as new, and desire to secure by Letters Patent, is-- Thesuction-blower constructed, as described, with vanes having theirforward ends bent and rear ends curved, the whole mounted and secured tothe shaft, as shown and described.

In witness whereof I have hereunto set my hand and affixed my seal this24th day of December, A. D. 1877.

JAMES B. ANDREWS.

In presence of THEODORE BITTER, WILLIAM T. P. BROWN.

